广告特效代码顶部自动收缩广告特效

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广告特效代码顶部自动收缩广告特效

<html xmlns="http://www.w3.org/1999/xhtml" lang="gb2312"> 
<head> 
<title>顶部收缩广告效果</title> 
<meta http-equiv="content-type" content="text/html; charset=gb2312" /> 
<meta name="keywords" content="顶部收缩广告效果" /> 
<script type="text/javascript"> 
var intervalId = null; 
function slideAd(id,nStayTime,sState,nMaxHth,nMinHth){ 
  this.stayTime=nStayTime*1000 || 3000; 
  this.maxHeigth=nMaxHth || 90; 
  this.minHeigth=nMinHth || 1; 
  this.state=sState || "down" ; 
  var obj = document.getElementById(id); 
  if(intervalId != null)window.clearInterval(intervalId); 
  function openBox(){ 
   var h = obj.offsetHeight; 
   obj.style.height = ((this.state == "down") ? (h + 2) : (h - 2))+"px"; 
    if(obj.offsetHeight>this.maxHeigth){ 
    window.clearInterval(intervalId); 
    intervalId=window.setInterval(closeBox,this.stayTime); 
    } 
    if (obj.offsetHeight<this.minHeigth){ 
    window.clearInterval(intervalId); 
    obj.style.display="none"; 
    } 
  } 
  function closeBox(){ 
   slideAd(id,this.stayTime,"up",nMaxHth,nMinHth); 
  } 
  intervalId = window.setInterval(openBox,10); 
} 
</script> 
</head> 
<body style="margin:0;padding:0;font-size:14px;"> 
<div id="MyMoveAd" style="background:#ff0;height:12px;overflow:hidden;"> 
<iframe name="google_ads_frame" width="468" height="60" frameborder="0"
 src="http://pagead2.googlesyndication.com/pagead/ads?client=ca-pub-9186806591725817&dt=1198315984640&lmt=1198315984&output=html&slotname=6945472709&correlator=1198315984640&url=http%3A%2F%2Fwww.cn-web.com%2Fcnweb%2F0%2F460%2Farticle%2F&cc=100&ga_vid=1729948988.1198315985&ga_sid=1198315985&ga_hid=1901916097&flash=8&u_h=768&u_w=1024&u_ah=738&u_aw=1024&u_cd=32&u_tz=480&u_java=true"
 marginwidth="0" marginheight="0" vspace="0" hspace="0" allowtransparency="true" scrolling="no"></iframe>
</div> 
<p>代码实例：<strong>顶部自动收缩广告效果</strong>&nbsp;&nbsp;&nbsp;您可以点击广告观看演示效果</p> 
<script type="text/javascript"> 
  
</script> 
</body> 
</html>